Impedance cardiography: a potential monitor for hemodialysis

The Journal of Surgical Research
Julie L WynneJoseph M Van de Water

Abstract

Impedance cardiography (ICG) technology has improved dramatically, and at least one device now can give a measurement of fluid status by using thoracic fluid content (TFC), along with cardiac output (CO) and cardiac index (CI). With a built-in sphygmomanometer cuff, it can also provide blood pressure (BP) and systemic vascular resistance index (SVRI). A currently available small portable ICG that provides reliable measures of fluid status could be an ideal noninvasive monitor for hemodialysis (HD), with the potential of helping avoid significant hemodynamic instability during HD. A case series of patients with chronic renal failure was studied while undergoing HD using ICG (BioZ, CardioDynamics, Int. Corp., San Diego, CA). Parameters recorded at 15-min intervals included TFC, CI, BP (systolic, diastolic, and mean arterial), SVRI, and heart rate. Using the Pearson method, the percentage changes in each of the parameters during the HD session were correlated to the amount of fluid removed (FR), normalized to body weight. Forty-one patients were enrolled, but six patients were excluded due to incomplete data; therefore, 35 patients (13 men and 22 women) formed the basis of the analysis. The age range was 28 to 87 (mean 55.1 +/- 16...Continue Reading

References

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May 8, 2010·International Urology and Nephrology·Abed BayyaSigal Sviri
Aug 1, 2007·Journal of Burn Care & Research : Official Publication of the American Burn Association·David G Greenhalgh
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